Google Testing Toggle For Search Options & Tools In Search Results

Google is testing a new user interface feature for the search results where they hide the search tools and options from the left hand side and let you toggle them open and close with a click of a mouse.

Michel Wester spotted this and posted a video and screen shots of how it works.

Here are screen shots of it first closed and then opened after clicking on it:

Here is a video of it in action:

Google often tests user interfaces and sometimes those tests are rolled out to everyone using Google search.